The Catalog of United States Personalized Postage
Tagging as used on Endica stamps
As production techniques were changed, sheets of 20 stamps were divided into two separable panes of 10 stamps. The method of applying tagging was updated to reflect current needs.
In the updated method, tagging was
applied in bands passing across five stamps at the perforated edge of
the stamp. The width of the applied tagging band was wide enough to
allow for normal die cutting shift or tagging mat shift. This method resulted in tagging bars that
covered the stamp perforations. Since some shifting in the die cutting
or tagging mat occured, the the bands at opposite ends appear to vary in
For the purpose of this catalog, the distance between the bands will be used as an indication of tagging changes.